An optical spectrophotometric survey of abundances in Magellanic Cloud planetary nebulae

Details An optical spectrophotometric survey of abundances in Magellanic Cloud planetary nebulae An optical spectrophotometric survey of abundances in Magellanic Cloud planetary nebulae

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.234..583m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 234, Oct. 1, 1988, p. 583-624. Research supported by th

Astronomy and Astrophysics

Astronomy

101

Abundance, H Ii Regions, Light (Visible Radiation), Magellanic Clouds, Planetary Nebulae, Milky Way Galaxy, Solar Neighborhood, Wolf-Rayet Stars

Scientific paper

Optical spectroscopic data for 71 planetary nebulae (PN) in the LMC and SMC were used to obtain nebular temperatures, densities, and the abundances of He, N, O, Ne, and Ar relative to H. Compared with Galactic PN, the present Ne and Ar abundances (the elements least affected by nucleosynthesis) are lower by 0.6 dex in the SMC and by 0.35 dex in the LMC. The data are consistent with the processing of all of the original carbon to nitrogen by the CN cycle operating in the progenitor stars at the time of the first dredge up. Five WR stars have been identified in the sample.

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